US20230403508A1 - Speaker module and wearable device - Google Patents

Speaker module and wearable device Download PDF

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Publication number
US20230403508A1
US20230403508A1 US18/185,403 US202318185403A US2023403508A1 US 20230403508 A1 US20230403508 A1 US 20230403508A1 US 202318185403 A US202318185403 A US 202318185403A US 2023403508 A1 US2023403508 A1 US 2023403508A1
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US
United States
Prior art keywords
vector
opening
rear opening
centroid
front opening
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
US18/185,403
Other languages
English (en)
Inventor
Sung Jen Wang
Chien-Hung Lin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HTC Corp
Original Assignee
HTC Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by HTC Corp filed Critical HTC Corp
Priority to US18/185,403 priority Critical patent/US20230403508A1/en
Priority to CN202310372759.1A priority patent/CN117241178A/zh
Priority to EP23167339.3A priority patent/EP4294046A1/de
Assigned to HTC CORPORATION reassignment HTC CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LIN, CHIEN-HUNG, WANG, SUNG JEN
Publication of US20230403508A1 publication Critical patent/US20230403508A1/en
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
    • H04R1/345—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means for loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00—Stereophonic arrangements
    • H04R5/02—Spatial or constructional arrangements of loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/025—Arrangements for fixing loudspeaker transducers, e.g. in a box, furniture
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
    • H04R1/403—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers loud-speakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
    • H04R1/345—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means for loudspeakers
    • H04R1/347—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means for loudspeakers for obtaining a phase-shift between the front and back acoustic wave
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00—Stereophonic arrangements
    • H04R5/033—Headphones for stereophonic communication
    • H04R5/0335—Earpiece support, e.g. headbands or neckrests

Definitions

  • the application relates to a speaker module, and in particular, to a speaker module which is adapted to be configured to a wearable device.
  • Miniature speakers have a better experience in 3 D sound performance and spatial sound field.
  • general miniature speakers usually lack the advantages of using headphones. For example, the sound quality changes caused by human factors and wearing differences, and it also lacks the privacy of closed headphones, and there will be more obvious left and right channel interference.
  • the application provides a speaker module, and the sum of its output sounds has directivity.
  • the application provides a wearable device, and the sound sum output by its speaker module has directivity.
  • a speaker module of the invention is adapted to be configured to a wearable device.
  • the speaker module includes an enclosure and a driving unit.
  • the driving unit is used to generate sound.
  • the enclosure contains the driving unit and has a front opening, a first rear opening and a second rear opening.
  • a sound sum of the sound output from the front opening, the first rear opening and the second rear opening has directivity.
  • the front opening and the first rear opening form a first vector towards the front opening.
  • the front opening and the second rear opening form a second vector towards the front opening.
  • the first rear opening and the second rear opening form a connection normal vector perpendicular to a connection of the first rear opening and the second rear opening and away from the front opening.
  • An inverse vector of the connection normal vector, the first vector and the second vector are added to form a combination vector.
  • the front opening has a front normal vector towards the outside of the enclosure.
  • a unit vector of the combination vector and a unit vector of the front normal vector are added to form a sum vector.
  • the wearable device of the invention includes a frame and at least one speaker module.
  • the speaker module includes an enclosure and a driving unit.
  • the driving unit is used to generate sound.
  • the enclosure contains the driving unit and has a front opening, a first rear opening and a second rear opening.
  • a sound sum of the sound output from the front opening, the first rear opening and the second rear opening has directivity.
  • the front opening and the first rear opening form a first vector towards the front opening.
  • the front opening and the second rear opening form a second vector towards the front opening.
  • the first rear opening and the second rear opening form a connection normal vector perpendicular to a connection of the first rear opening and the second rear opening and away from the front opening.
  • An inverse vector of the connection normal vector, the first vector and the second vector are added to form a combination vector.
  • the front opening has a front normal vector towards the outside of the enclosure.
  • a unit vector of the combination vector and a unit vector of the front normal vector are added to form a sum vector.
  • the sum of the sounds output by the speaker module has directivity, which can reduce the deviation caused by the user's wearing variation and the structural difference of the human body.
  • the directivity can also isolate the voice, making it difficult for outsiders to hear the voice content output by the speaker module, creating a more private use situation, and allowing users to have a more realistic listening experience and a more comfortable use experience.
  • the sum vector formed by adding the unit vector of the combination vector and the unit vector of the front normal vector provides a more accurate direction for the sound sum output by the speaker module.
  • FIG. 1 is a three-dimensional schematic diagram of a speaker module according to an embodiment of the present invention.
  • FIG. 2 A is a schematic front view of the speaker module in FIG. 1 .
  • FIG. 2 B is a schematic front view of the speaker module in FIG. 1 .
  • FIG. 2 C is a schematic front view of the speaker module in FIG. 1 .
  • FIG. 2 D is a three-dimensional schematic diagram of the speaker module in FIG. 1 .
  • FIG. 3 A is a schematic front view of the speaker module in FIG. 1 .
  • FIG. 3 B is a schematic front view of the speaker module in FIG. 1 .
  • FIG. 4 is a schematic diagram of a wearable device according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of a wearable device according to another embodiment of the present invention.
  • FIG. 6 A is a schematic diagram of a wearable device with an associated speaker module outputting sound.
  • FIG. 6 B is a schematic diagram of sound output by the wearable device in FIG. 4 .
  • the speaker module 100 includes an enclosure 110 and a driving unit 120 .
  • the driving unit 120 is used to generate sound.
  • the enclosure 110 contains the driving unit 120 .
  • the enclosure 110 has a front opening 110 a , a first rear opening 110 b and a second rear opening 110 c .
  • the front opening 110 a faces the user's head.
  • the first rear opening 110 b faces upward relative to the user's head.
  • the second rear opening 110 c faces away from the user's head.
  • a sound sum of the sound output from the front opening 110 a , the first rear opening 110 b and the second rear opening 110 c has directivity.
  • the front opening 110 a and the first rear opening 110 b form a first vector b 1 towards the front opening 110 a .
  • the front opening 110 a and the second rear opening 110 c form a second vector b 2 towards the front opening 110 a .
  • the first rear opening 110 b and the second rear opening 110 c form a connection normal vector a′ perpendicular to a connection of the first rear opening 110 b and the second rear opening 110 c and away from the front opening 110 a .
  • the front opening 110 a has a front normal vector c towards the outside of the enclosure 110 , as shown in FIG. 2 B .
  • a direction of the sum vector S is a direction of the sound sum.
  • the centroid of the front opening 110 a and the centroid of the first rear opening 110 b can form the first vector b 1 towards the centroid of the front opening 110 a .
  • the centroid of the front opening 110 a and the centroid of the second rear opening 110 c can form the second vector b 2 toward the centroid of the front opening 110 a .
  • the centroid of the first rear opening 110 b and the centroid of the second rear opening 110 c can form the connection normal vector a′ perpendicular to a connection of the centroid of the first rear opening 110 b and the centroid of the second rear opening 110 c and away from the front opening 110 a .
  • the centroid of the front opening 110 a may have the front normal vector c towards the outside of the enclosure 110 .
  • the centroid of the first rear opening 110 b has a first rear normal vector n 1 towards the outside of the enclosure 110 .
  • the centroid of the second rear opening 110 c has a second rear normal vector n 2 towards the outside of the enclosure 110 .
  • the plane where the connection normal vector a′ is located is coplanar with the plane formed by the first vector b 1 and the second vector b 2 .
  • the sum vector S formed according to any point of the front opening 110 a , any point of the first rear opening 110 b , and any point of the second rear opening 110 c defines an effective area in the front opening 110 a .
  • the sum vectors S can roughly define the boundaries of the effective area.
  • the extending direction of the front opening 110 a may be inclined to the extending direction of the first rear opening 110 b and the extending direction of the second rear opening 110 c .
  • the front opening 110 a can extend arcuately, and the first rear opening 110 b and the second rear opening 110 c can extend linearly.
  • a wearable device 10 may include a frame 11 , a display unit 12 and a pair of speaker modules 100 as shown in FIG. 1 .
  • the display unit 12 is configured to the frame 11 .
  • the speaker modules 100 are configured to the frame 11 .
  • the wearable device 10 is, for example, a Head Mount Display (HMD).
  • the speaker modules 100 can be made separately and be detachably, slidably or movably configured to the frame 11 , or can be integrated as a part of the wearable device 10 .
  • the wearable device 20 may include a frame 21 and a speaker module 100 .
  • the speaker module 100 is removably configured to the frame 21 .
  • the wearable device 20 is, for example, an ear-hook type device.
  • the associated wearable device 30 generally has two associated speaker modules 33 disposed on the left and right sides of the frame 31 of the wearable device 30 . Since the associated speaker modules 33 only have a single opening, when the left speaker module 33 outputs sound, a positive sound wave R 1 is generated and diffused to the surroundings, and then transmitted to the user's right ear, resulting in interference.
  • each of the speaker modules 100 has the front opening 110 a 110 a , the first rear opening 110 b 110 b and the second rear opening 110 c 110 c .
  • the front opening 110 a 110 a and the first rear opening 110 b 110 b are arranged on the inner side of the wearable device 10 and face the direction of the user's head at a specific angle, so that the sound output by the left speaker module 100 has a positive sound wave R 2 and a negative sound wave R 3 opposite to the positive sound wave R 2 .
  • the positive sound wave R 2 is output by the front opening 110 a 110 a .
  • the negative sound wave R 3 is output by the first rear opening 110 b 110 b .
  • the negative sound wave R 3 and the positive sound wave R 2 bypass the user's head and transmit to the right ear, the negative sound wave R 3 and the positive sound wave R 2 will cancel each other when the user's right ear meets because the transmission distance is close and the sound waves still maintain the opposite phase. Thereby reducing the interference of the right ear by the sound output by the left speaker module. Similarly, when the sound waves of the right speaker module 100 are transmitted to the left ear, they will also cancel each other, reducing the interference caused by the sound output by the right speaker module 100 to the left ear.
  • the sum of the sounds output by the speaker module has directivity, which can reduce the deviation caused by the user's wearing variation and the structural difference of the human body.
  • the directivity can also isolate the voice, making it difficult for outsiders to hear the voice content output by the speaker module, creating a more private use situation, and allowing users to have a more realistic listening experience and a more comfortable use experience.
  • the sum vector formed by adding the unit vector of the combination vector and the unit vector of the front normal vector provides a more accurate direction for the sound sum output by the speaker module.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
US18/185,403 2022-06-13 2023-03-17 Speaker module and wearable device Pending US20230403508A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US18/185,403 US20230403508A1 (en) 2022-06-13 2023-03-17 Speaker module and wearable device
CN202310372759.1A CN117241178A (zh) 2022-06-13 2023-04-10 扬声模块及穿戴式装置
EP23167339.3A EP4294046A1 (de) 2022-06-13 2023-04-11 Lautsprechermodul und tragbare vorrichtung

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US202263351438P 2022-06-13 2022-06-13
US18/185,403 US20230403508A1 (en) 2022-06-13 2023-03-17 Speaker module and wearable device

Publications (1)

Publication Number Publication Date
US20230403508A1 true US20230403508A1 (en) 2023-12-14

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ID=86006577

Family Applications (1)

Application Number Title Priority Date Filing Date
US18/185,403 Pending US20230403508A1 (en) 2022-06-13 2023-03-17 Speaker module and wearable device

Country Status (2)

Country Link
US (1) US20230403508A1 (de)
EP (1) EP4294046A1 (de)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4862699B2 (ja) * 2007-03-09 2012-01-25 ソニー株式会社 ヘッドホン装置
US10555071B2 (en) * 2018-01-31 2020-02-04 Bose Corporation Eyeglass headphones
CN114584874A (zh) * 2020-12-01 2022-06-03 宏达国际电子股份有限公司 扬声模块及穿戴式装置

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Owner name: HTC CORPORATION, TAIWAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:WANG, SUNG JEN;LIN, CHIEN-HUNG;REEL/FRAME:063545/0409

Effective date: 20230321

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